Service difficulty report · Tension Tie · Boeing 7377H4

Difficulty date
March 31, 2022
Submitted
May 2, 2022
Operation
Air carrier
Aircraft
N475WN
Make and model
Boeing 7377H4
Aircraft serial
32474
Aircraft time
59,744 hours, 35,276 cycles
Part
Tension Tie
Part number
147A56203
Condition
Corroded
Location
Wet Area
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CORROSION ON TENSION STRAP AT AFT WET AREA BS1016; 1029 LBL3 WL208. / [01] CORROSION ON TENSION STRAP AT BS 1016; LBL3 MEASURES 3'X1'. FOUND TO BE OUT OF LIMITS PER SRM 53-70-51-1A-1 DUE TO 100% MATERIAL LOSS.;[02] VERIFIED CORRECTIVE ACTION #1;[03] REMOVED TENSION STRAP AT BS 1006-1030; LBL3; WL208 PER SRM 51-40-02-0G-0.;[04] LOCATED AND DRILLED NEW 147A5620-3 STRAP AT BS 1006-1030; LBL3; WL208 PER DWG 147A5600 AND SRM 51-40-05. OK TO INSTALL.;[05] VERIFIED CORRECTIVE ACTION #4;[06] STARTED INSTALLING 147A5620-3 STRAP AT BS 1006-1030; LBL3; WL208 PER DWG 147A5600 AND SRM 51-40-02-0G-0.;[07] COMPLETED INSTALLATION OF 147A5620-3 STRAP AT BS 1006-1030; LBL3; WL208 PER DWG 147A5600 AND SRM 51-40-02-0G-0.;[08] VERIFIED CORRECTIVE ACTION 7.;[09] COMPLETE

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